Date: Mon, 11 Feb 2013 13:51:11 +0100 From: Szabolcs Nagy <nsz@...t70.net> To: musl@...ts.openwall.com Subject: Re: [PATCH v3] move the definition of __pthread_tsd_main to the only compilation unit that references it * Jens Gustedt <jens.gustedt@...ia.fr> [2013-02-11 13:24:07 +0100]: > > In case of dynamic linking, this sounds a bit dangerous to me. Suppose > I have a program that runs fine, without linking to the key stuff. Say > it launches a new thread which then has the key table invalid. > > Then I dynamically load a module that uses keys. The thread that has > an invalid table jumps into a function of that module that calles > pthread_key_get() ? > > In such a scenario everything would simply crash, wouldn't it? > this weak alias magic only works for static linking since the .so has non-weak version of the symbols (the non-weak symbols will take precedence and only those will be added to the .so, but in .a there will be objects with weak symbols and objects with non-weak ones and linker will do the right thing)
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